The
communication between the islands is currently limited to several
emergency cableways, which are guarded. There are lots of little
zipline stations scattered everywhere, though, and it's not possible to
guard every one (even remember every one!), so that's what Rikter
counts on.

The station on the winged mountain (we've seen it before, on
page 17) doesn't
even lead to cave dwellers' island directly. It leads to a small
uninhabited rock where Kalare liked to have her storytelling classes.